Fastening device



March 25 1924.

T. BRIDGWQOD FASTENING DEVICE Filed July 24, 1922 Patented Mar. 25,1924.

EJNETEE STATES PATENT @FFHQE.

THOMAS BRIDGWOOD, OF STOKE-ON-TBENT, ENGLAND.

FASTENING DEVICE.

Application filed July 24, 1922.

To all whom it may concern:

Be it known that I, THOMAS BRIDGWOOD, subject of the King of GreatBritain and Ireland, and resident of 35 Ohetwynd Street, Smallthorne,Stoke-on-Trent, in the county of Stafford, England, motor mechanic, haveinvented certain new and useful Improvements in Fastening ,Devices (forwhich I have filed application .in Great Britain by application forPatent No. 178,654, dated the 25th day of February, 1921), of which thefollowing is a specification.

My invention relates to a new or improved means of attaching anddetaching the wheels of motor vehicles applicable. also for connectingpulleys and the like to shafting, the object being to provide rapiddetachability and assembling together with absolute security.

Description of drawings.

Fig. 1 is a sectional elevation illustrating the boss of a motor wheelwith dogs for looking it in position in the manner to be hereindescribed,

Fig. 2 is an elevation of a driving sleeve or shaft to accommodate theboss .of the wheel shown at Fig. 1,

Fig. 3 is a sectional elevation showing the boss of the wheel and thedriving sleeve together but in their unlocked position,

Figs. 4 and 5 are similar views to Fig. 3 but with the locking dogsindifferent positions which will be herein referred to,

Fig. 6 is an end view as seen from the left side of Fig. 1,

Fig. 7 is an end view shown at Fig. 2,

Fig. 8 is a cross section through A-B of Fig. 9 is a similar sectionthrough C--D of Fig. 3,

Fig. 10 is a cross section through E-F of Fig. 5,

Fig. 11 are front and side elevations respectively of a key for slidingthe springcontrolled dog in a manner to be herein described.

' a is the boss of a motor wheel, a a dust cover on the outside thereof,whilst 5 (shown detached in full lines at Fig. 2) is the driving sleeve.The boss of the wheel a (Fig. 1) carrying the locking dogs (which willbe referred to later), is constructed to slide in position on thedriving sleeve 6 and by a part rotation of the motor wheel the dogs ofthe driving sleeve $eria1 No. 577,166.

are caused to engage the driving sleeve by which means the wheel isfirmly secured thereto in a very expeditious manner.

The interior of the boss a of the motor wheel (Fig. 1) is provided withtwo fixed projections or dogs a and longitudinal grooves a in whichslides a spring-controlled key or dog 0. The spiral spring cl isconnected at its outer end (Z to the dog 0, the coil of the spring beingincreased at its inner end to take against the outer end of the drivingsleeve 6. The slidable key or dog creferred to is of U formation withthe outer ends of the U turned inwards as shown in sectional elevationat Fig. 4 but if desired the portion of the dog where the spiral springis connected may be of annular formation instead of a narrow width asshown on the drawings. The spiral spring d is employed to exert aconstant outward pressure to the key or dog 0.

The driving sleeve 6 has a similar number of key-ways or grooves 6formed longitudinally and diametrically opposite each other and at theirinner ends the grooves c are continued a short distance transversely atc and another set of grooves c are formed a suitable distance from thefirst set to run parallel to them and then are formed a further shortdistance at e at an angle of ninety "degrees.

To assemble the parts, the driving sleeve Z2 is first mounted securelyon the axle of the vehicle over the bearings in the usual way and is thenon-detachable part when the wheel is changed.

The fixed dogs a arranged in the wheel boss a are then placed in thelongitudinal grooves e formed on the driving sleeve 6, the wheel is thenslid inwards until the fixed dogs a of the boss 64 thereof reach the endof the grooves e (as shown at Fig. 1,). Fig. 3 is illustrated to clearlyshow the fixed dogs a in the longitudinal groove 0 and just prior to thewheel boss a being pushed the full length of the longitudinal grooves c.When the said fixed dogs a are opposite the transverse grooves 6 (Fig.4:) a key 7 (Fig. 11) is inserted in the key-hole g in the dust cover aof the wheel boss at, the key 7 being forced inwards compressing thespring (Z until the ends of the slidable dog 0 are opposite thetransverse grooves e (as shown at Fig. 4) when the wheel can be rotateda short distance out of relation with, or independently of, the drivingsleeve Z),

key-hole 9 again which compresses the spring d, and when the ends of thedog 0 reach the inner ends of the short t ansverse grooves c the wheelis rotated a short distance, the ends of the dog 0 then passing throughthe transverse grooves e and into the longitudinal slots 6 when thewheel can be slid outwardly away from the driving sleeve 1). v

The insertion of the key f through the slot 9 presses the dog 0 forwardand by a slight rotation of the key f in the keyhole g to allow theprojections to take transversely of the key-hole g, the dog 0 can beretained in position whilst the wheel is rotated.

A hinged or other suitable cover 9 may be employed over the key-hole gto exclude dust.

In order to support a spare wheel constructed in accordance with thisinvention I employ a suitable bracket 72. (shown dotted at Fig. 2)secured to a convenient part of the vehicle and having fixed thereto asleeve similar to the driving sleeve 7) hereinbefore referred to, thewheel being slid thereon and locked thereto in precisely the same manneras placing the wheel on the driving sleeve 19 of the vehicle.

What I claim is:

1.. In a fastening device, a revoluble driving sleeve having two mainlongitudinal grooves in its outer side, said grooves each having twotransverse grooves on one side, and one of each of the transversegrooves having an auxiliary longitudinal groove at its end arranged toone side of the main groove to which it pertains, a hub or boss slidableand revoluble on the said sleeve and provided with two dogs which areslidable in the said longitudinal main grooves and two of the transversegrooves, said hub or boss having also longitudinal grooves whichregister with the said longitudinal main grooves, a U-shaped keyslidable in the longitudinal grooves of the said hub or boss and havingprojections at-its end portions for engagingwith the said mainlongitudinal grooves and in the other two transverse grooves and in thesaid auxiliary longitudi nal grooves, and a spring which moves the hubor boss longitudinally away from the said sleeve and holds theprojections of the key in engagement with the said auxiliarylongitudinal grooves.

2. A fastening device as set forth in claim 1, the said spring being ofhelical form and interposed between the middle part of the said U-shapedkey and the outer end of the said sleeve.

3. In combination with a fastening device as set forth in claim 1, a capsecured to the said hub or boss and inclosing the said U-shaped key,said cap being provided with a hole at its end, and a wrench insertablethrough the said hole in the cap and affording a means for compressingthe said spring and for moving the said dogs and projectionscircumferentially into and out of engagement with the said transversegrooves.

In testimony whereof I have hereunto set my hand in the presence of twowitnesses.

THOMAS BRIDGWVOOD.

Witnesses:

J. BENTON, J. H. CorEs'rA'rER.

